WILLIAM OPTICS
Testar Australia is an authorized William Optics dealer. William Optics has earned a reputation over the last two decades for producing high quality yet affordable telescopes and accessories. Their refractors are made from precision CNC-machined and anodized aluminium and feature Ohara FPL-53 synthetic fluorite glass for excellent aberration correction.
Up to 5% offWILLIAM OPTICS MINICAT 51 WIFD f/3.5 REFRACTOR
Very low stock (1 unit)Sale price $1,47900AUD Regular price $1,54900Unit price /Unavailable
6% offWILLIAM OPTICS REDCAT 51-III WIFD f/4.9 REFRACTOR
Very low stock (1 unit)Sale price $1,31900AUD Regular price $1,39900Unit price /Unavailable
5% offWILLIAM OPTICS REDCAT 61 WIFD F/4.9 APO REFRACTOR
Very low stock (1 unit)Sale price $1,80900AUD Regular price $1,89900Unit price /Unavailable
Sold out4% offWILLIAM OPTICS ULTRA-CAT 56 f/4.8 REFRACTOR
Sale price $2,30900AUD Regular price $2,39900Unit price /Unavailable
Sold out5% offWILLIAM OPTICS ULTRA-CAT 76 f/4.8 REFRACTOR
Sale price $3,78900AUD Regular price $3,99900Unit price /Unavailable
Sold outUp to 5% offWILLIAM OPTICS REDCAT 91 WIFD f/4.9 REFRACTOR
Sale price $4,28900AUD Regular price $4,49900Unit price /Unavailable
4% offWILLIAM OPTICS ULTRA-CAT 108 f/4.8 REFRACTOR
In stockSale price $6,26900AUD Regular price $6,49900Unit price /Unavailable
New arrivalWILLIAM OPTICS ULTRA-CAT 131 f/4.9 REFRACTOR
BackorderedRegular price $8,89900AUDUnit price /Unavailable
Sold out24% offZENITHSTAR 61 II F/5.9 APO DOUBLET
Sale price $98900AUD Regular price $1,29900Unit price /Unavailable
GRAN TURISMO 81 WIFD F/5.9 APO TRIPLET
BackorderedRegular price $3,29900AUDUnit price /Unavailable
3% offWILLIAM OPTICS PLEIADES 68 F/3.8 ASTROGRAPH
BackorderedSale price $3,29900AUD Regular price $3,39900Unit price /Unavailable
4% offWILLIAM OPTICS PLEIADES 111 F/4.8 ASTROGRAPH
BackorderedSale price $6,26900AUD Regular price $6,49900Unit price /Unavailable
1% offWILLIAM OPTICS PLEIADES 181 F/5.5 ASTROGRAPH
BackorderedSale price $29,69900AUD Regular price $29,99900Unit price /Unavailable
Up to 8% offFLUOROSTAR 120 F/6.5 APO TRIPLET
BackorderedSale price From $5,43900AUD Regular price $5,89900Unit price /Unavailable
Up to 10% offFLUOROSTAR 132 F/6.9 APO TRIPLET
BackorderedSale price From $7,21900AUD Regular price $7,99900Unit price /Unavailable
Up to 7% offFLUOROSTAR 156 F/7.8 APO TRIPLET
BackorderedSale price $13,02900AUD Regular price $13,99900Unit price /Unavailable
Up to 5% offIn stockSale price $18900AUD Regular price $19900Unit price /Unavailable
Sold outUp to 3% off
5% offFLAT6AIII 0.8x REDUCER FOR GT71, GT81, Z81, Z103
BackorderedSale price $37900AUD Regular price $39900Unit price /Unavailable
6% offFLAT68III 1x FLATTENER FOR FLT91, FLT120, FLT132, FLT156
BackorderedSale price $1,07900AUD Regular price $1,14900Unit price /Unavailable
9% offFLAT7A 0.8x REDUCER FOR FLT120, FLT132, FLT156
BackorderedSale price $1,08900AUD Regular price $1,19900Unit price /Unavailable
8% offFLAT8 0.72x REDUCER FOR GT102, FLT132, FLT156
BackorderedSale price $1,32900AUD Regular price $1,44900Unit price /Unavailable
5% offFLAT73A 1x FLATTENER FOR ZENITHSTAR 73
BackorderedSale price $37900AUD Regular price $39900Unit price /Unavailable
10% offWILLIAM OPTICS DR FLAT MASTER 0.8x REDUCER FOR GSO RC
BackorderedSale price $1,38900AUD Regular price $1,55000Unit price /Unavailable
WILLIAM OPTICS FLATTENER ADAPTER FOR FLT91, FLT120
BackorderedRegular price $7900AUDUnit price /Unavailable
13% offWILLIAM OPTICS DSD VIXEN DOVETAIL 210mm
Very low stock (1 unit)Sale price $6900AUD Regular price $7900Unit price /Unavailable
Sold outUp to 11% offWILLIAM OPTICS DSD VIXEN DOVETAIL 245mm
Sale price $7900AUD Regular price $8900Unit price /Unavailable
Up to 5% offWILLIAM OPTICS LOSMANDY DOVETAIL 400mm
BackorderedSale price $18900AUD Regular price $19900Unit price /Unavailable
CAMERA ANGLE ROTATOR FOR 2.5" M63 FOCUSER
Very low stock (1 unit)Regular price $18900AUDUnit price /Unavailable
7% off3" CAMERA ANGLE ROTATOR FOR M92 FOCUSER
In stockSale price $27900AUD Regular price $29900Unit price /Unavailable
Sold out11% offDURA-BRIGHT 2" DIELECTRIC 90° DIAGONAL
Sale price $24900AUD Regular price $27900Unit price /Unavailable
Sold out10% offDURA-BRIGHT 1.25" DIELECTRIC 90° DIAGONAL
Sale price $17900AUD Regular price $19900Unit price /Unavailable
6% offWILLIAM OPTICS 1.25" 90° ERECTING PRISM
In stockSale price $15900AUD Regular price $16900Unit price /Unavailable
6% offWILLIAM OPTICS COPPER M48 T-RING FOR CANON
In stockSale price $14900AUD Regular price $15900Unit price /Unavailable
6% offWILLIAM OPTICS COPPER M48 T-RING FOR NIKON
Very low stock (1 unit)Sale price $14900AUD Regular price $15900Unit price /Unavailable
Sold out13% offWILLIAM OPTICS M48 T-RING FOR FUJI X-MOUNT
Sale price $6900AUD Regular price $7900Unit price /Unavailable
13% offWILLIAM OPTICS M48 T-RING FOR SONY E-MOUNT
In stockSale price $6900AUD Regular price $7900Unit price /Unavailable
10% offWILLIAM OPTICS M48 T-RING FOR CANON EOS-R
In stockSale price $8900AUD Regular price $9900Unit price /Unavailable
Sold out10% offWILLIAM OPTICS M48 T-RING FOR NIKON Z
Sale price $8900AUD Regular price $9900Unit price /Unavailable
13% offWILLIAM OPTICS M48 T-RING FOR OLYMPUS MICRO 4/3
Very low stock (1 unit)Sale price $6900AUD Regular price $7900Unit price /Unavailable
WILLIAM OPTICS M48 T-RING FOR PENTAX K
Very low stock (1 unit)Regular price $5900AUDUnit price /Unavailable
